Actions
All four quadriceps are powerful extensors of the knee joint. They are crucial in walking, running, jumping and squatting. Because rectus femoris attaches to the ilium, it is also a flexor of the hip. This action is also crucial to walking or running as it swings the leg forward into the ensuing step. The quadriceps, specifically the vastus medialis, plays the important role of stabilizing the patella and the knee joint during gait.
Read more about this topic: Quadriceps Femoris Muscle
Famous quotes containing the word actions:
“The first glance at History convinces us that the actions of men proceed from their needs, their passions, their characters and talents; and impresses us with the belief that such needs, passions and interests are the sole spring of actions.”
—Georg Wilhelm Friedrich Hegel (1770–1831)
“Can it be borne, this bodying-forth by wind
Of joy my actions turn on, like a thread
Carrying beads?”
—Philip Larkin (1922–1986)
“Coercion may prevent many transgressions; but it robs even actions which are legal of a part of their beauty. Freedom may lead to many transgressions, but it lends even to vices a less ignoble form.”
—Karl Wilhelm Von Humboldt (1767–1835)